"He said that by asking her to do that, she'll remove herself from his life. She won't be his friend any longer. He can't live without her, and he said that if she were to do that, he would leave me.
He would leave me, if Daisy came to the conclusion, ON HER OWN, that she didn't want to interfere in her our relationship anymore."
My heart goes out to you... I have many close guy friends & a lot are married or have g/fs. I'am particularly close with one. And I WOULD NEVER EVERRR spend that much time with him.
My opinion is that he carries more then "friendship" feelings for her. Running out to buy things for her when she's coming over? Renting a wii for HER? Telling his OWN GF that he would LEAVE you if SHE left him!! Why do you want to be 2nd in your own reltionship?
I LOOOVE LOVE my friends but I would NEVER treat them better then my OWN PARTNER. That is definitely a red flag. He might be your 1st love but you absolutely need to let him go for your own sake and self worth. Don't let him continue to make you feel the way you do.
There is a BETTER guy out there for you who will love just YOU & want to just spend time with YOU. Do you really want to stay with a guy who puts someone else before you? Move out asap. Go back home or do whatever you can to just get away from this guy to show him how much he hurt you & how much he took you for granted. This daisy female is no where near as sweet as you sound for trying to at least make this all work out. He will definitely find out the hard way.
Please keep us posted I wish you the best because if you do choose to leave him then it will be hard but the best thing you could do right now.